Age Calculation With JS

 Two functions of calculate current age on node js 

// Function to calculate age

const calculateAge = async (date) => {

try {

const dateOfBirth = date;

// Split the date string into day, month, and year

const [day, month, year] = dateOfBirth.split('/');

// Construct a new Date object with the components

const dob = new Date(`${year}-${month}-${day}`);

// Validate the parsed date

if (isNaN(dob.getTime())) {

throw new Error('Invalid date format');

}

console.log(dob);

// Current date

const currentDate = new Date();

// Calculate the age

let age = currentDate.getFullYear() - dob.getFullYear();

// Check if the birthday has occurred this year

if (

currentDate.getMonth() < dob.getMonth() ||

(currentDate.getMonth() === dob.getMonth() &&

currentDate.getDate() < dob.getDate())

) {

age--;

}

return age;

} catch (error) {

console.log(error.message);

}

};

function calculateAgeSync(birthdate) {

// Split the date string into day, month, and year

const [day, month, year] = birthdate.split('/');

// Create a new Date object with the correct format (YYYY-MM-DD)

const formattedDate = `${year}-${month}-${day}`;

// Calculate age using the formatted date

const today = new Date();

const birthDate = new Date(formattedDate);

let age = today.getFullYear() - birthDate.getFullYear();

const monthDiff = today.getMonth() - birthDate.getMonth();

if (monthDiff < 0 || (monthDiff === 0 && today.getDate() < birthDate.getDate())) {

age--;

}

return age;

}